Développer et réduire A = (5+3y)(6-2y) B = 2x²+4x (x+3) Factoriser C = (5x - 3)(7x - 9)+(3x + 4)(5x - 3) D = 24x - 16
Mathématiques
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Question
Développer et réduire
A = (5+3y)(6-2y)
B = 2x²+4x (x+3)
Factoriser
C = (5x - 3)(7x - 9)+(3x + 4)(5x - 3)
D = 24x - 16
A = (5+3y)(6-2y)
B = 2x²+4x (x+3)
Factoriser
C = (5x - 3)(7x - 9)+(3x + 4)(5x - 3)
D = 24x - 16
2 Réponse
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1. Réponse freegood
a) 30+18y-10y-6y2=-6y2+8y+30
b/2x2+12x2+12x=14x2+12x
d/8(4x-2)
c/(5x-3)(7x-9+3x+4)=(5x-3)(10x-5) -
2. Réponse meryemflower2
A= (5+3y)(6-2)
= 30-10+18y-6y
= 20+12y
B= 2x² +4×(×+3)
= 2x²+4x²+12x
=6x²+12x
c=(5x-3)(7x-9)+(3x+4)(5x-3)
=(5x-3)(7x-9+3x+4)
=(5x-3)(10x-5)
D=24x-16
=4*8x-4*4
=4(8x-4)
ce symbole * veut dire multiplication